GIGABYTE GA-990XA-UD3 AM3+ AMD 990X SATA 6Gb/s USB 3.0 ATX AMD Motherboard CPU:Support for AMD AM3+ FX/AM3 Phenom II/Athlon II processors. Chipsets: AMD 990X/AMD SB950 Memory: 4 x 1.5V DDR3 DIMM sockets supporting up to 32 GB of system memory. Audio: Realtek ALC889 codec , High Definition Audio, Dolby Home Theater, 2/4/5.1/7.1-channel, LAN: 1 x Realtek RTL8111E chip (10/100/1000 Mbit) Expansion Slots: 1 x PCI Express x16 slot, running at x16. 1 x PCI Express x16 slot, running at x8. 1 x PCI Express x16 slot. Storage Interface: 6 x SATA 6Gb/s connectors , Support for SATA RAID 0, RAID 1, RAID 5,RAID 10 and JBOD Back Panel Connectors: 1 x PS/2 keyboard/mouse port/1 x optical S/PDIF Out connector/1 x IEEE 1394 port/8 x USB 2.0/1.1 ports/2 x Internal I/O Connectors: 1 x 24-pin ATX main power connector/1 x 8-pin ATX 12V power connector/6 x SATA 6Gb/s USB: Up to 14 USB 2.0/1.1 ports, Up to 4 USB 3.0/2.0 ports, Up to 2 IEEE 1394a ports Expansion slots: running at x4. 2 x PCI Express x1 slots. 2 x PCI slots. Support for AMD CrossFireX and NVIDIA SLI technology Back panel connectors: USB 3.0/2.0 ports/1 x RJ-45 port/6 x audio jacks (Center/Subwoofer Memory: Support for DDR3 2000(O.C.)/1866/1600/1333/1066 MHz memory modules, Dual channel memory architecture. Internal IO connectors:front panel audio header/1 x S/PDIF Out header/3 x USB 2.0/1.1 headers/1 x USB 3.0/2.0 Internal Io connectors/1 x CPU fan header/2 x system fan headers/1 x power fan header/1 x front panel header/1 x Internal IO connectors:header/1 x IEEE 1394a header/1 x Trusted Platform Module (TPM) header/1 x serial port header/1 x clearing CMOS jumper Back panel connectors:Speaker Out/Rear Speaker Out/Side Speaker Out/Line In/Line Out/Microphone)